Achievement Data – Achievement data are a measure of overall student performance. They include the percentage of students scoring proficient or advanced on the Tennessee Comprehensive Assessment Program, or TCAP, Achievement tests in grades 3-8 and high school End of Course exams. Another achievement measure reported by the state is the ACT test. The overall percentage of students scoring proficient and advanced on achievement data may differ from accountability data because of the federal accountability requirements related to students with disabilities and English Learners.